gui calculator added

Author: kashifkhan0771

Calculator

@@ -0,0 +1,255 @@
+# ==================== Libraries ====================
+import tkinter as tk
+from tkinter import ttk
+from tkinter import messagebox
+# ===================================================
+# ==================== Classes ======================
+
+
+class Inside:
+    def __init__(self, parent):
+        self.parent = parent
+        # ----- Main Frame -----
+        self.cal_frame = ttk.Frame(self.parent)
+        self.cal_frame.grid(row=0, column=0)
+        # ----------------------
+        # ----- Variable For Main Output -----
+        self.out_var = tk.StringVar()
+        # ----- Operator Chooser -----
+        self.opr = tk.StringVar()
+        # ----- Values Holder -----
+        self.value1 = tk.StringVar()
+        self.value2 = tk.StringVar()
+        # ------------------------------------
+        self.output_box()  # <---------- Output Box Shower
+        self.cal_buttons()  # <---------- Buttons On Calculator
+
+    def output_box(self):
+        show = ttk.Entry(self.cal_frame, textvariable=self.out_var, width=20, font=('calibri', 16), state='readonly')
+        show.grid(row=0, column=0, sticky=tk.W, ipady=6, ipadx=1, columnspan=4)
+        show.focus()
+
+    # ========== * Button Events * ========== < --- Sequence 789456123
+    def press_7(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(7)
+        else:
+            current += str(7)
+            self.out_var.set(current)
+
+    def press_8(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(8)
+        else:
+            current += str(8)
+            self.out_var.set(current)
+
+    def press_9(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(9)
+        else:
+            current += str(9)
+            self.out_var.set(current)
+
+    def press_4(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(4)
+        else:
+            current += str(4)
+            self.out_var.set(current)
+
+    def press_5(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(5)
+        else:
+            current += str(5)
+            self.out_var.set(current)
+
+    def press_6(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(6)
+        else:
+            current += str(6)
+            self.out_var.set(current)
+
+    def press_1(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(1)
+        else:
+            current += str(1)
+            self.out_var.set(current)
+
+    def press_2(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(2)
+        else:
+            current += str(2)
+            self.out_var.set(current)
+
+    def press_3(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(3)
+        else:
+            current += str(3)
+            self.out_var.set(current)
+
+    def press_0(self):
+        current = self.out_var.get()
+        if current == '':
+            self.out_var.set(0)
+        else:
+            current += str(0)
+            self.out_var.set(current)
+
+    # ========== Operators Button Handling Function ==========
+    def press_clear(self):
+        self.out_var.set('')
+
+    def press_reset(self):
+        self.out_var.set('')
+
+    def press_plus(self):
+        self.value1 = self.out_var.get()
+        if self.value1 == '':
+            messagebox.showwarning('Operator Before Number', 'Please Enter Number Before Operator')
+        else:
+            self.out_var.set('')
+            self.opr = '+'
+
+    def press_min(self):
+        self.value1 = self.out_var.get()
+        if self.value1 == '':
+            messagebox.showwarning('Operator Before Number', 'Please Enter Number Before Operator')
+        else:
+            self.out_var.set('')
+            self.opr = '-'
+
+    def press_mul(self):
+        self.value1 = self.out_var.get()
+        if self.value1 == '':
+            messagebox.showwarning('Operator Before Number', 'Please Enter Number Before Operator')
+        else:
+            self.out_var.set('')
+            self.opr = '*'
+
+    def press_div(self):
+        self.value1 = self.out_var.get()
+        if self.value1 == '':
+            messagebox.showwarning('Operator Before Number', 'Please Enter Number Before Operator')
+        else:
+            self.out_var.set('')
+            self.opr = '/'
+
+    # ==============================================
+    # ========== ***** Equal Button Function ***** ==========
+    def press_equal(self):
+        self.value2 = self.out_var.get()
+        if self.value2 == '':
+            messagebox.showerror('Second Number', 'Please Enter Second Number To Perform Calculation')
+        else:
+
+            try:
+                if self.opr == '+':
+                    self.value1 = int(self.value1)
+                    self.value2 = int(self.value2)
+                    result = self.value1 + self.value2
+                    self.out_var.set(result)
+                if self.opr == '-':
+                    self.value1 = int(self.value1)
+                    self.value2 = int(self.value2)
+                    result = self.value1 - self.value2
+                    self.out_var.set(result)
+                if self.opr == '*':
+                    self.value1 = int(self.value1)
+                    self.value2 = int(self.value2)
+                    result = self.value1 * self.value2
+                    self.out_var.set(result)
+                if self.opr == '/':
+                    self.value1 = int(self.value1)
+                    self.value2 = int(self.value2)
+                    result = self.value1 / self.value2
+                    self.out_var.set(result)
+
+            except ValueError:
+                messagebox.showinfo('Restart', 'Please Close And Restart Application...Sorry')
+
+    def cal_buttons(self):
+        # ===== Row 1 =====
+        btn_c = tk.Button(self.cal_frame, text='Clear', width=6, height=2, bd=2, bg='#58a8e0', command=self.press_clear)
+        btn_c.grid(row=1, column=0, sticky=tk.W, pady=5)
+        btn_div = tk.Button(self.cal_frame, text='/', width=6, height=2, bd=2, bg='#58a8e0', command=self.press_div)
+        btn_div.grid(row=1, column=1, sticky=tk.W)
+        btn_mul = tk.Button(self.cal_frame, text='*', width=6, height=2, bd=2, bg='#58a8e0', command=self.press_mul)
+        btn_mul.grid(row=1, column=2, sticky=tk.E)
+        btn_min = tk.Button(self.cal_frame, text='-', width=6, height=2, bd=2, bg='#58a8e0', command=self.press_min)
+        btn_min.grid(row=1, column=3, sticky=tk.E)
+        # ===== Row 2 =====
+        btn_7 = tk.Button(self.cal_frame, text='7', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_7)
+        btn_7.grid(row=2, column=0, sticky=tk.W, pady=2)
+        btn_8 = tk.Button(self.cal_frame, text='8', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_8)
+        btn_8.grid(row=2, column=1, sticky=tk.W)
+        btn_9 = tk.Button(self.cal_frame, text='9', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_9)
+        btn_9.grid(row=2, column=2, sticky=tk.E)
+        btn_plus = tk.Button(self.cal_frame, text='+', width=6, height=5, bd=2, bg='#58a8e0', command=self.press_plus)
+        btn_plus.grid(row=2, column=3, sticky=tk.E, rowspan=2)
+        # ===== Row 3 =====
+        btn_4 = tk.Button(self.cal_frame, text='4', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_4)
+        btn_4.grid(row=3, column=0, sticky=tk.W, pady=2)
+        btn_5 = tk.Button(self.cal_frame, text='5', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_5)
+        btn_5.grid(row=3, column=1, sticky=tk.W)
+        btn_6 = tk.Button(self.cal_frame, text='6', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_6)
+        btn_6.grid(row=3, column=2, sticky=tk.E)
+        # ===== Row 4 =====
+        btn_1 = tk.Button(self.cal_frame, text='1', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_1)
+        btn_1.grid(row=4, column=0, sticky=tk.W, pady=2)
+        btn_2 = tk.Button(self.cal_frame, text='2', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_2)
+        btn_2.grid(row=4, column=1, sticky=tk.W)
+        btn_3 = tk.Button(self.cal_frame, text='3', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_3)
+        btn_3.grid(row=4, column=2, sticky=tk.E)
+        btn_equal = tk.Button(self.cal_frame, text='=', width=6, height=5, bd=2, bg='orange', command=self.press_equal)
+        btn_equal.grid(row=4, column=3, sticky=tk.E, rowspan=2)
+        # ===== Row 5 =====
+        btn_0 = tk.Button(self.cal_frame, text='0', width=14, height=2, bd=2, bg='#90a9b8', command=self.press_0)
+        btn_0.grid(row=5, column=0, sticky=tk.W, pady=2, columnspan=2)
+        btn_reset = tk.Button(self.cal_frame, text='Reset', width=6, height=2, bd=2, bg='#90a9b8', command=self.press_reset)
+        btn_reset.grid(row=5, column=2, sticky=tk.E)
+
+
+class Main(tk.Tk):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # ----- Title -----
+        self.title('Calculator')
+        # -----------------
+        # ----- Geometry Settings -----
+        self.geometry_settings()
+        # -----------------------------
+
+    def geometry_settings(self):
+        _com_width = self.winfo_screenwidth()
+        _com_height = self.winfo_screenheight()
+        _my_width = 450
+        _my_height = 450
+        _x = int(_com_width/2 - _my_width/2)
+        _y = int(_com_height/2 - _my_height/2)
+        geo_string = str(_my_width)+"x"+str(_my_height)+"+"+str(_x)+"+"+str(_y)
+        # ----- Setting Now -----
+        self.geometry(geo_string)
+        self.resizable(width=False, height=False)
+        # -----------------------
+
+
+# =================== Running The Application =======
+if __name__ == "__main__":
+    calculator = Main()
+    Inside(calculator)
+    calculator.mainloop()